Definitely do your research and make sure to interview your PM.

This is a two-way interview, so have a short list of questions to ask the mentor (What books do you recommend I read to gain a better understanding?

I have no knowledge of them, but the founder is in a recent interview with Bill Faeth on Youtube.

Data driven and research and investor friendly agents are always reach higher levels in the industry.I never interviewed big name companies, and I'm glad I didn't.

I'd also suggest having in-person interviews (post screenings) as you can build rapport, not necessary just a suggestion. 

This is a two-way interview, so have a short list of questions to ask the mentor (What books do you recommend I read to gain a better understanding?

just some things to think about.in addition to the BP family of podcasts, the rental income podcast with Dan Lane is a great podcast and he interviews a lot of medium size landlords who aren't flashy but really know what they're doing.

I interviewed one of them earlier this year.

Ask them to clarify during the interview!

At the same time, I encourage you to interview several agents and ask them tough questions.